# Time Zone Engine Variables

## `system_time_zone` variable

This variable stores the time zone set on the host (the Linux OS). It is a read-only variable and read by the engine during startup.

```sql
SELECT @@SYSTEM_TIME_ZONE;

```

```output

+--------------------+
| @@SYSTEM_TIME_ZONE |
+--------------------+
| UTC                |
+--------------------+

```

## `time_zone` variable

This variable exists in SingleStore only to conform to MySQL standards. Setting this variable does not do anything. If SingleStore is using the time zone setting of the host (the Linux OS), then the `time_zone` variable returns the value `SYSTEM`. If you set the time zone through SingleStore, via the [default\_time\_zone](https://docs.singlestore.com/db/v9.1/user-and-cluster-administration/maintain-your-cluster/setting-the-time-zone/setting-the-time-zone-in-singlestore.md) configuration option, then the `time_zone` variable returns the value of `default_time_zone`.

```sql
SELECT @@TIME_ZONE;

```

```output

+-------------+
| @@TIME_ZONE |
+-------------+
| SYSTEM      |
+-------------+

```

***

Modified at: June 22, 2022

Source: [/db/v9.1/user-and-cluster-administration/maintain-your-cluster/setting-the-time-zone/time-zone-engine-variables/](https://docs.singlestore.com/db/v9.1/user-and-cluster-administration/maintain-your-cluster/setting-the-time-zone/time-zone-engine-variables/)

(An index of the documentation is available at /llms.txt)